SMC先導式電磁(ci)閥的工作原理：

SMC先導式(shi)電(dian)(dian)磁(ci)(ci)閥(fa)里有密(mi)閉的(de)(de)(de)腔(qiang)，在不(bu)同(tong)位置(zhi)開(kai)有通(tong)(tong)孔(kong)(kong)，每個(ge)孔(kong)(kong)連接不(bu)同(tong)的(de)(de)(de)油(you)管(guan)(guan)，腔(qiang)中間是活(huo)(huo)塞(sai)，兩(liang)面是兩(liang)塊電(dian)(dian)磁(ci)(ci)鐵(tie)，哪(na)面的(de)(de)(de)磁(ci)(ci)鐵(tie)線圈通(tong)(tong)電(dian)(dian)閥(fa)體就(jiu)(jiu)(jiu)會被吸(xi)引(yin)到哪(na)邊，通(tong)(tong)過控(kong)制(zhi)(zhi)閥(fa)體的(de)(de)(de)移動(dong)來(lai)開(kai)啟或關閉不(bu)同(tong)的(de)(de)(de)排油(you)孔(kong)(kong)，而進油(you)孔(kong)(kong)是常(chang)開(kai)的(de)(de)(de)，液壓油(you)就(jiu)(jiu)(jiu)會進入(ru)不(bu)同(tong)的(de)(de)(de)排油(you)管(guan)(guan)，然后通(tong)(tong)過油(you)的(de)(de)(de)壓力來(lai)推動(dong)油(you)缸的(de)(de)(de)活(huo)(huo)塞(sai)，活(huo)(huo)塞(sai)又帶(dai)動(dong)活(huo)(huo)塞(sai)桿(gan)，活(huo)(huo)塞(sai)桿(gan)帶(dai)動(dong)機械(xie)裝置(zhi)。這樣通(tong)(tong)過控(kong)制(zhi)(zhi)電(dian)(dian)磁(ci)(ci)鐵(tie)的(de)(de)(de)電(dian)(dian)流通(tong)(tong)斷(duan)就(jiu)(jiu)(jiu)控(kong)制(zhi)(zhi)了(le)機械(xie)運(yun)動(dong)。

SMC先導式電(dian)磁閥特點：

1、外漏(lou)堵(du)絕，內漏(lou)易控，使用安全

內(nei)外(wai)泄漏(lou)是危及(ji)安全(quan)的(de)要素。其它自控閥(fa)(fa)通常將閥(fa)(fa)桿伸出，由電(dian)動(dong)(dong)(dong)(dong)、氣動(dong)(dong)(dong)(dong)、液(ye)動(dong)(dong)(dong)(dong)執行機構控制(zhi)閥(fa)(fa)芯的(de)轉動(dong)(dong)(dong)(dong)或移(yi)動(dong)(dong)(dong)(dong)。這(zhe)都要解決長(chang)期(qi)動(dong)(dong)(dong)(dong)作閥(fa)(fa)桿動(dong)(dong)(dong)(dong)密(mi)封(feng)(feng)的(de)外(wai)泄漏(lou)難題；唯有電(dian)磁閥(fa)(fa)是用電(dian)磁力作用于密(mi)封(feng)(feng)在電(dian)動(dong)(dong)(dong)(dong)調節閥(fa)(fa)隔磁套管內(nei)的(de)鐵芯完(wan)成(cheng)，不存在動(dong)(dong)(dong)(dong)密(mi)封(feng)(feng)，所(suo)以外(wai)漏(lou)易堵(du)絕。電(dian)動(dong)(dong)(dong)(dong)閥(fa)(fa)力矩控制(zhi)不易，容(rong)易產生(sheng)內(nei)漏(lou)，甚至(zhi)拉斷閥(fa)(fa)桿頭部(bu)；電(dian)磁閥(fa)(fa)的(de)結構型式(shi)容(rong)易控制(zhi)內(nei)泄漏(lou)，直至(zhi)降為零。所(suo)以，電(dian)磁閥(fa)(fa)使(shi)用特(te)別安全(quan)，尤其適用于腐蝕性(xing)、有毒或高低溫的(de)介質。

2、系統簡單，便接(jie)電腦，價格低廉

電(dian)(dian)磁(ci)閥本身結構簡(jian)單，價格也低，比起(qi)調節閥等其它種類執行(xing)器易(yi)于(yu)安裝維護(hu)。更(geng)(geng)顯著的(de)是所組成的(de)自控系統簡(jian)單得多(duo)，價格要低得多(duo)。由于(yu)電(dian)(dian)磁(ci)閥是開關信(xin)號控制，與工(gong)控計算(suan)機連接十分(fen)方便(bian)。在當今電(dian)(dian)腦(nao)普及，價格大幅下(xia)降的(de)時(shi)代(dai)，電(dian)(dian)磁(ci)閥的(de)優勢就更(geng)(geng)加明顯。

3、動作(zuo)快遞，功率微小，外(wai)形輕巧

電(dian)(dian)磁閥響應時(shi)間可以短至幾(ji)個毫秒(miao)，即使是先導式電(dian)(dian)磁閥也可以控制在幾(ji)十毫秒(miao)內。由于自成回路，比(bi)之其(qi)它自控閥反應更靈敏。設計得當的電(dian)(dian)磁閥線(xian)圈功率消(xiao)耗很低，屬節(jie)能產品；還可做到只需(xu)觸(chu)發(fa)動作，自動保持閥位(wei)，平時(shi)一點也不耗電(dian)(dian)。電(dian)(dian)磁閥外(wai)形尺寸(cun)小，既(ji)節(jie)省(sheng)空(kong)間，又輕巧美觀。